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All technical contents of this standard are compulsory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
Limit of harmful substances of marine coatings
1 Scope
This standard specifies the terms and definitions, product classification, requirements, test methods, inspection rules and packaging marks with respect to the allowable limits of harmful substances of marine coatings to human body and the environment.
This standard is applicable to all kinds of marine coatings made of steel, light alloy, glass fiber reinforced plastic, etc. as main hull materials.
This standard is not applicable to fire retardant coating for ships.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes—Sampling
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9750 Marks for package of coating products
GB 24408-2009 Limit of harmful substances of exterior wall coatings
GB/T 25011-2010 Test method and determination for DDT content of marine antifouling paints
GB/T 26085-2010 Test method and determination of total tin in antifouling paints for ship
GB 30981-2014 Limit of harmful substances of anticorrosion coatings for construction steel structure
GB/T 33395-2016 Determination of asbestos in coatings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
ship; vessel
structures capable of sailing and berthing in waters, engaging in transportation, fighting, operations, scientific research, etc.
[GB/T 7727.1-2008, Definition 2.1]
3.2
steel ship
ship that uses steel as the main material for its hull structure
[GB/T 7727.1-2008, Definition 9.1]
3.3
marine coatings
general term of various coatings applied to various parts of the ship to prevent seawater, marine atmospheric corrosion and marine organism adhesion and to meet the special requirements of the ship
[GB 12900-1991, Definition 2.4.2]
3.4
volatile organic compound (VOC)
any organic liquid and/or solid that may evaporate naturally at normal temperature and pressure of the atmospheric environment where it is present
[GB/T 5206-2015, Definition 2.270]
3.5
volatile organic compound content; VOC content
mass of volatile organic compound contained in coatings measured under specified conditions
[GB/T 5206-2015, Definition 2.271]
3.6
anti-fouling paint
a type of coating applied to underwater parts of ships or other underwater structures to prevent biological growth
[GB/T 5206-2015, Definition 2.19]
3.7
biocide
a type of additive added to coatings to prevent organisms from eroding substrates, coatings, or their paint films through microbial degradation
[GB/T 5206-2015, Definition 2.27]
4 Product classification
In this standard, marine coatings are divided into shop primer, primer, finish, general primer, anti-fouling paint, maintenance paint and other coatings.
Where, anti-fouling paint is divided into:
——Type I, refers to self-polishing or abrasive anti-fouling paint containing biocide;
——Type II, refers to non-self polishing or non-abrasive anti-fouling paint containing biocide;
——Type III, refers to non-self polishing or non-abrasive anti-fouling paint without biocide.
5 Requirements
5.1 The VOC content in solvent-based coating products shall meet the limit requirements in Table 1. The limit requirement is limited to marine coatings for steel ship, excluding coatings for various parts and components in ship manufacturing.
Table 1 Limits of VOC
Product type Limit/(g/L)
Shop primer Inorganic ≤ 700
Organic ≤ 680
Primer a ≤ 550
Finish b ≤ 500
General primer c ≤ 400
Anti-fouling paint Types I and II ≤ 500
Type III ≤ 450
Maintenance paint d ≤ 600
Other coatings e ≤ 500
It shall be determined after mixing according to the specified ratio and dilution ratio of the product. If the amount of diluent used is within a certain range, it shall be determined after dilution according to the recommended maximum dilution.
a Anticorrosive coating applied to the substrate of ship target area (including but not limited to railings, outer hull and deck) outside the cabin.
b Surface coating applied for beautifying non immersed area.
c Anticorrosive coating applied to substrates of various cabin parts including ballast tank.
d Various coatings used in ship repair coating.
e Marine coatings that do not belong to the above product types, which do not include special types of coatings used in marine painting, such as signal paints and antirust oils.
5.2 The contents of limited solvents, heavy metals, biocides and asbestos harmful substances in various marine coating products shall meet the limit requirements in Table 2. Coatings for various parts and components used in ship manufacturing shall meet the limit requirements for heavy metals and asbestos harmful substances in Table 2 (limited solvents and biocides are not tested).
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Product classification
5 Requirements
6 Test methods
7 Inspection rules
8 Packaging marks
Bibliography
